public class PositionNewEditOverrideExtension{
    // This simple extension is to demonstrate overriding the save function, and how to determine if the record
    //   should be updated or inserted during the save operation.  This extension could be used on both
    //   an Edit override and a New override simultaneously.
    
    // TODO: Declare a variable to hold the position.
    public Position__c position {get; set;}
    
    // TODO: Declare a Boolean variable to track if this is an insert or an update.
	public boolean b;

    // Declare standardController controller
    private ApexPages.StandardController controller;

    // Declare a string property to hold a message value
    public String myMessage { get; set; }

    
    // TODO: Write the extension constructor and initialize the member position variable by using a method on the standard controller.
    // TODO: Then update the Boolean to store if this is a create or update    
public PositionNewEditOverrideExtension(ApexPages.StandardController c) {
		controller = c;
		position = (Position__c)c.getRecord();
		b = position.Id == null;
    }
    
    // This function is called from a commandButton on the page
    public PageReference SayHelloWorld(){
        // call this custom function from your visualforce page
        myMessage = 'Hello World!';

        // We're not redirecting the user to a different page so we just say return null
        return null;
    }
    
    public PageReference mysave(){
	//TODO: Override the save function.  Check to see if this is an insert or update and use the right DML command
		if (b) insert position;
		else update position;
        //TODO: Then navigate using the standard controller.
        return controller.save();
    }
   
}